Strainer.



H. B. HOLT.

STRAINER. APPLICATION FILED NOV; 3,1910.

Patented Apr. 18, 1911.

2 SHBET$SHEET l.

WITN ESSESI H. B. HOLT.

STRAINBR.

APPLICATION FILED NOV. 3, 1910.

Patented Apr. 18, 1911.

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FIELEJQ WITN ESSESI HARRIS B. HOLT, 0F VERSAILLES, KENTUCKY.

STRAINER.

Specification of Letters Patent. Application filed November 3, 1910.Serial No.

Patented Apr. 18, 1911.

To all whom it may concern:

Be it known that I, HARRIS B. HoL'r, residing at Versailles, in thecounty of VVoodford and State of Kentucky, a citizen of the UnitedStates, have invented or=discovered certain new and useful Improvementsin Strainers, of which improvements the following is a specification.

The invention described herein relates to certain improvements instrainers for pumps, etc, and has for its object .a con struction inwhich by the strainer may be removed quickly and with little labor fromthe separating surface and without removal of any of the parts andwithout any stoppage of the flow of'the material being cleaned.

The invention is hereinafter more fully described and claimed.

vIn the accompanying drawing forming a part of this specification Figure1 is a sectional elevation of my improved strainer the parts beingadjusted for'connecting the apparatus in a vertical line of pipe, Fig. 2is a side elevation showing the parts adj usted for connection in ahorizontal line of pipe, Fig. 3 is a view similar to Fig. 1 illustratinga modification of my improvement and Fig, 4 is a transverse section ofthe straining shell, on a reduced scale.

The straining apparatus consists of a main shell having its inlet 1 andoutlet 2 suitably constructed for connection in a line of pipe.An-angular diaphragm 3, 4 is formed across the shell one Wall as 4thereof being formed parallel or substantially parallel with-the endwall of a circular boss or projection 5 forming a portion of the sidewall of the shell. A second shell 6 divided into two compartments aUandb by a diaphragm 7 is mounted on the boss or projection 5. (Through theside wall of the chamber a is formed an opening which is surrounded witha circular rim 8 adapted to fit over the boss or projection The rim isprovided with a flange 9 which is adapted to be bolted to the flange 10on the boss or projection. By regularly spacing the bolt holes in theflanges 9 and 10 the shell 6 can be adjusted on the boss so that itsaxis can be parallel or ag tllllly desired angle to the axis of the main5 1c An openin is formed through the diaphragm 7 an a valve 11 having astem 12 of the shell 6 is the foreign matter caught,

passing through a stuffing box 13 .on the end provided for closing theopening through the diaphragm 7 perforated diaphragm is arrangedtransverse of the flow of liquid through the shell 1 and in suchrelation to the opening into the receiving chamber a that materialforced into the chamber. It is preferred that straining member ordiaphragm should be made in the form of an open ended cylinder 14v whichis supported in openings formed through the portion 4 of the diaphragmof the main shell and the end wall of the boss 5. It is preferred thatthe cylinder should have its wall perforated for about three fourths ofits perimeter as clearly shown in Figs. 1 and 3, and that the openingsin which the perforated cylinder is supported, should be so arrangedthat the latter will be-subjected to substantially equal pressure at allpoints internally and externally. The liquid being treated flows intoone end of thecylinder, and the valve 11 being closed through theperforations to the outlet 2.

The perforated cylinder is so adjusted in position that its imperforateportion will be lowermost, thus preventing any sand or other smallobjects which may. settle in the cylinder from passing again into thestrained liquids.

In order to remove any material caught by the strainer a shaft 15provided with a helically arranged blade 16 is mounted in suitablebearings so that the edges of the blade will sweep the entire innersurface of the strainer forcing any foreign objects into the chamber a.It will be readily understood bythose skilled in the art that as theshaft 15 is small and the pitch of the blade 16 is large that the screwwill not materially retard the flow of the liquid.

The chamber 6 is provided with a discharge opening which is normallyclosed by a cap 17. This opening ismade of able size to permit of theremoval of objects too large to be washed out through the discharge-pipe18.: The removal of the sand and other small material through the pipe18 which as shown in Figs. 1 and 2 is on or con sider-- caught by thediaphragm may be readily approximately on a'level with the bottom ofchamber 1), is effected by a jetof water introduced through the pipe 19connected to the chamber a or other suitable part of the apparatus. Thepipe is connected to chamber b in line with the discharge pipe 18.

During the normal operation of the apparatus the valve 11 is preferablyleft open provided the valve 20 in the discharge pipe 18 is closed sothat any material forced into the chamber a by the cleaning screw, whichmay be given a few turns from time to time, will drop into the chamber6. When the latter is to be cleaned, the valve 11 is closed so that thecap may be removed without interfering with the operation of theapparatus. If the valve 11 is kept closed after the chamber 6 is cleanedthis chamber should be filled with liquid by opening the valve in pipe19 so as to equalize pressures in chambers a and b and therebyfacilitating the opening valve 11.

When the straining apparatus is placed in the suction line of a pump itis preferred that the valve 11 be kept closed and before opening it, thepet-cock 24 should be opened and water admitted to chamber 1) throughpipe 19 so as to force all air out of chamber b.

In Fig. 1 the shell 6 having the cleaning chambers is shown with itsaxis parallel with the axis of the shell 1 or the position of the shell6 should have when the apparatus is connected to a vertical line ofpipe. When the apparatus is connected to a hori zontal line of pipe theshell 6 is adjusted to such a position that the materials caught by thestrainer will when forced therefrom drop into the discharge chamber 5.

It will be observed that the dirt receiving chamber a is practically alateral extension of the main or strainer chamber of the apparatus beinglocated at one end of the perforated shell 14 to receive foreignmaterial forced, from the cylinder 14.. In the construction shown inFig. 1, provision is made for closin the connection between thereceiving an discharging chambers, when it becomes necessary to cleanthe dis charge chamber 6 but if desired the receiv=- ing chamber may becut off from the main chamber of the apparatus and the receiv ing anddischarge chambers uninterru tedly connected, as shown in Fig. 3. As tierein shown a valve 21 is so arranged that when shifted inwardly by thevalve stem 22 it will so seat against the wall of the main shellas toclose the end of the straining cylinder adjacent to the receivingchamber a. When so seated the discharge chamber 6 may be opened andcleaned. In this construction the inner end of the shaft 15 is mountedin a central boss or projection 23 formed on the valve 21 the bearingfor the shaft-being so constructed as to permit the movement of thevalve independent of the shaft.

The shell 6 with its normally closed outlet and a valve interposedbetween the discharge end of the straining cylinder and the outlet fromthe shell (3. form as it were a lock permitting of the removal offoreign material from the strainer without interfering with the flow ofliquid through the straining apparatus.

I claim herein as my invention:

1. In a straining apparatus, the combination of a shell adapted to beconnected to a line of pipe, a perforated diaphragm arranged transverseof theflow of liquid through the shell, means operative between theinlet of'the shell and the diaphragm for the removal of material caughtby the diaphragm, a shell arranged to receive material removed from thestrainer and haying a normally closed outlet and means inter-pos'edbetween the straining diaphragm and such outlet for preventing theescape of fluid through the outlet when opened.

2. In a straining apparatus the combination of a shell adapted to beconnected to :1

line of pipe, a perforated diaphragm ar ranged transverse of the flow ofliquid through the shell, means operative between the inlet and'thediaphragm for removing material caught by the diaphragm, a chamberarranged to. receive such material and a discharge chamber connected tothe receiving chamber and a valve for closing the connection betweensaid chambers.

3. In a straining apparatus the combination of a shell adapted to beconnected to a line, of pipe, a perforated cylinder so arranged in theline of flow that the liquid will enter one end and escape through theperforations, means for removing material caught by the cylinder, achamber for" the reception of the material removed from the cylinder, adischarge chamber connected to the receiving chamber and a valve forclosing the connection between said chambers.

1. In a straining apparatus, the combination of a shell adapted to beconnected to a line of "pipe, a perforated diaphragm arranged transverseof the flow of liquid through the shell, means traversing the inlet side-of' the diaphragm for the removal of material, a shell provided withconnected chambers adjustably mounted on the first shell with onechamber in position to receive the material caught by the diaphragm anda valve for closing the connection between said chambers. I

5. In a straining apparatus the combination of a shell ada ted to'beconnected to a line of pipe, a cy inder having open ends and perforatedwalls so'arranged that the liquid will enter one end and escape throughthe perforations, a rotatable screw arranged in. the cylinder, a chamberarranged to receive material removed by the screw, a discharge chamberconnected to the receiving chamber a valve controlling the connectionbetween the chambers, a'pipe connectedtfor flushing the dischargechamber and an outlet p pe 'said pipes being connected to the chamber inline with each other.

6. In a straining apparatus, the combination of a shell adapted tobeconnected to a line of pipe a cylinder having a portion only of itswall perforated and having open ends the cylinder being so arranged withthe imperforate portion lowermost that the liquid enters at one end andescapes through the perforations,

means for removing the material retained in the cylinder, a chamberarranged to receive such material, a discharge chambernconnected to thereceiving 15 chamber, and a valve for closing such connection.

In testimony whereof, I have hereunto set my hand.

4 HARRIS B. HOLT.

